EP2420603A2 - Trennstab - Google Patents

Trennstab Download PDF

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Publication number
EP2420603A2
EP2420603A2 EP11177394A EP11177394A EP2420603A2 EP 2420603 A2 EP2420603 A2 EP 2420603A2 EP 11177394 A EP11177394 A EP 11177394A EP 11177394 A EP11177394 A EP 11177394A EP 2420603 A2 EP2420603 A2 EP 2420603A2
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EP
European Patent Office
Prior art keywords
fibers
fiber
bar
thickness
air
Prior art date
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Granted
Application number
EP11177394A
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English (en)
French (fr)
Other versions
EP2420603A3 (de
EP2420603B1 (de
Inventor
Hubert Hergeth
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Individual
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Publication of EP2420603A3 publication Critical patent/EP2420603A3/de
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Publication of EP2420603B1 publication Critical patent/EP2420603B1/de
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots

Definitions

  • wire feeders have been used to feed fibers and air for 50 years when loading cards and web-forming machines.
  • lamellae or separating rods To improve the slippage of fibers, one also uses lamellae or separating rods.
  • the patent DE 3304571 and the AS 1286436 show such slats.
  • An L-shaped lamella shape is stable, but has a smaller opening area than dividing flat bars, The flat bars have a lower air resistance.
  • a disadvantage of the flat bars is a clogging of the bars after some time. This is done by placing individual fibers on the fiber side on either side of a rod around the rod and twisting the ends by air swirls. The twirled fibers are then no longer carried along by the fiber flocs passing by the rods.
  • the object of the invention is to obtain the good air passage and to avoid a twirling of the fiber ends.
  • Existing rods or grate bars have the same depth over the entire length in the fiber flow direction and the air passage direction. According to the invention, the depth of the bars in the fiber transport direction increases.
  • the rods are free only in the upper third of the fiber approach, then a fiber column has formed.
  • the turbulence of the fiber ends requires a residence time.
  • the twists are pulled apart again shortly after they have formed. This is still done as long as the ends of the fibers are not intensely twisted.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

Stab an einem Schacht einer Textilmaschine zur Trennung von Fasern und Luft, der in der Tiefe im Verlauf der Fasertransportrichtung zunimmt.

Description

  • In der Textilindustrie werden beim Beschicken von Karden und Vliesbildemaschinen seit 50 Jahren Siebflächen zum Trennen von Fasern und Luft eingesetzt. Um das Rutschen von Fasern zu verbessern, setzt man auch Lamellen oder Trennstäbe ein. Das Patent DE 3304571 und die AS 1286436 zeigen solche Lamellen. Eine L-förmige Lamellenform ist stabil, hat aber eine geringere Öffnungsfläche als Trennflachstäbe, Die Flachstäbe haben einen geringeren Luftwiderstand. Nachteilig bei den Flachstäben ist ein Zusetzen der Stäbe nach einiger Zeit. Dies erfolgt dadurch, dass einzelne Fasern sich von der Faserseite her zu beiden Seiten eines Stabes um den Stab legen und sich die Enden durch Luftwirbel verzwirbein. Die verzwirbelten Fasern werden dann nicht mehr durch die an den Stäben vorbeiziehenden Faserflocken mitgenommen. Aufgabe der Erfindung ist es, den guten Luftdurchlass zu erhalten und ein Verzwirbeln der Faserenden zu vermeiden. Bestehende Stäbe oder Roststäbe haben in Faserflussrichtung und Luftdurchtrittsrichtung die gleiche Tiefe über die ganze Länge. Erfindungsgemäß nimmt die Tiefe der Stäbe in Fasertransportrichtung zu. In der Praxis sind die Stäbe nur im oberen Drittel frei für den Faseranflug, danach hat sich eine Fasersäule gebildet. Die Verwirbelung der Faserenden erfordert eine Verweildauer. Durch die zunehmende Tiefe der Stäbe werden beim Herunterziehen der Fasern durch die nachfolgenden Faserflocken die Verzwirbelungen bereits kurz nach dem Entstehen wieder auseinandergezogen. Dies erfolgt noch, solange die Enden der Fasern nicht intensiv verzwirbelt sind.
  • Die Erfindung wird anhand zweier Zeichnungen beschrieben. Durch eine Einblasung 1) gelangen Fasern in einen Schacht 2). Die Transportluft tritt durch Stäbe 5) aus und es bildet sich einer Fasersäule 3), die durch eine Abzugseinrichtung 4) aus dem Schacht gezogen wird. Die Stäbe vergrößern sich entlang der Bewegungsrichtung 7) der Fasersäule in Richtung der Luftdurchströmung 8).
  • Einzelne Fasern 6) legen sich durch die Luftströmung um einen Stab, und die beiden Enden versuchen sich zu verzwirbeln. Durch die zunehmende Tiefe Z) des Stabes werden die Verzwirbelungen beim Rutschen entlang des Stabes aufgelöst.

Claims (2)

  1. Stab an einer Faser-Luftstrom-Einrichtung in Textilfaserschächten dadurch gekennzeichnet, dass der Stab im Verlauf der Richtung, in der die Fasern an ihm entlang rutschen und im Bereich, in dem die Fasern sich ablagern, mindestens einmal in der Tiefe zunimmt.
  2. Stab nach Anspruch 1) dadurch gekennzeichnet, dass sich die Tiefenzunahme um mindestens 40 % der kleinsten Tiefe erhöht.
EP11177394.1A 2010-08-18 2011-08-12 Textilfaserschacht für eine Faser-Luftstrom-Einrichtung mit mehreren von einander beabstandete Trennstäbe Active EP2420603B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010034778A DE102010034778A1 (de) 2010-08-18 2010-08-18 Trennstab

Publications (3)

Publication Number Publication Date
EP2420603A2 true EP2420603A2 (de) 2012-02-22
EP2420603A3 EP2420603A3 (de) 2014-03-05
EP2420603B1 EP2420603B1 (de) 2017-01-11

Family

ID=44677490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11177394.1A Active EP2420603B1 (de) 2010-08-18 2011-08-12 Textilfaserschacht für eine Faser-Luftstrom-Einrichtung mit mehreren von einander beabstandete Trennstäbe

Country Status (3)

Country Link
EP (1) EP2420603B1 (de)
DE (1) DE102010034778A1 (de)
ES (1) ES2622439T3 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3304571C1 (de) 1983-02-10 1984-05-03 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung zum Abscheiden von aufgeloesten Faserflocken aus einem Luftstrom,z.B. Flockenbeschickung fuer eine Karde

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE710607C (de) * 1939-04-23 1941-09-17 Saechsische Textilmaschinen Fa Vorrichtung zum Abscheiden von Fasergut aus einem Luftstrom
CH437063A (de) * 1966-04-05 1967-05-31 Rieter Ag Maschf Vorrichtung zum Abscheiden von aufgelösten Faserflocken aus einem Transportluftstrom
DE1950002B1 (de) * 1969-10-03 1971-03-25 Truetzschler & Co Ablagerungsschacht fuer die pneumatische Flockenfoerderung
CH511646A (de) * 1970-07-28 1971-08-31 Rieter Ag Maschf Verfahren und Vorrichtung zum Abscheiden von aufgelösten Faserflocken aus einem Luftstrom
DE3006831A1 (de) * 1980-02-23 1981-09-17 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung zum abscheiden von verunreinigungen aus baumwoll-faserflocken
DE8605999U1 (de) * 1986-03-05 1990-07-05 Hergeth, Hubert A., Dipl.-Ing. Dipl.-Wirtsch.-Ing., 52076 Aachen Vorrichtung zum Abscheiden von Fasern
DE9421331U1 (de) * 1994-10-10 1995-12-07 Trützschler GmbH & Co KG, 41199 Mönchengladbach Vorrichtung zum Abscheiden von aufgelösten Faserflocken aus einem Luftstrom, z.B. Flockenbeschickung für eine Karde, Reiniger o.dgl.
DE102004021453A1 (de) * 2004-04-29 2005-11-17 Concert Gmbh Formkopf und Verfahren zum Herstellen eines Faservlieses
WO2006086911A1 (de) * 2005-02-21 2006-08-24 Maschinenfabrik Rieter Ag Flockenspeisung und flockenspeicher.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3304571C1 (de) 1983-02-10 1984-05-03 Trützschler GmbH & Co KG, 4050 Mönchengladbach Vorrichtung zum Abscheiden von aufgeloesten Faserflocken aus einem Luftstrom,z.B. Flockenbeschickung fuer eine Karde

Also Published As

Publication number Publication date
EP2420603A3 (de) 2014-03-05
EP2420603B1 (de) 2017-01-11
ES2622439T3 (es) 2017-07-06
DE102010034778A1 (de) 2012-02-23

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